Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5677499 | Lysimeter for collecting chemical samples from the vadose zone | Patrick K. Sullivan, Robert E. Bourke | 1997-10-14 |
| 5590979 | Flexible pipe diffuser and method of using the same | Patrick K. Sullivan, Warren E. Bucher | 1997-01-07 |